67-73 Cougar Sequential Turn Signal Trouble Shooting Thread

If it's mechanical, electrical or just downright confusing, this is the place to find and share answers.
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coachJack
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Re: 67-73 Cougar Sequential Turn Signal Trouble Shooting Thread

#411

Post by coachJack »

Joe,

You can download my pdf file from here h

https://classiccougarcommunity.com/arti ... _Guide.pdf

If you have any questions that are not covered in my document, post a message on this forum and I will reply to your questions. I do have an updated version of my document that also may already cover your questions.

Also post your location, if your local to the Bay Area or Stockton, I can meet with you if you need any hands on help.

Good Luck

Coach Jack
jdepalma
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Re: 67-73 Cougar Sequential Turn Signal Trouble Shooting Thread

#412

Post by jdepalma »

thank you
bcwayne
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Re: 67-73 Cougar Sequential Turn Signal Trouble Shooting Thread

#413

Post by bcwayne »

Good day everyone,
First car was a 67 Cougar, I loved that car. My dad was an engineer for Ford and bought home from the test lab some XR7's that had all kinds of test modifications, some were really fast, others tested future car improvements.

I was just able to purchase a 1969 Convertible in excellent shape but the previous owners had issues with brake and emergency lights working in rear.
I've read through this thread, got some things to check such as Turn signal switch-okay, Brake Pedal switch-has power, Circuit Breaker-good, green wire in trunk in the sequencer box flashes on off with er lights and stays steady with brake lights. The rear side marker lights flash with E lights. Turn signals and running lights work in rear but Stop and E lights don't. The green wire that solders onto the sequencer board doesn't lead to anything. The other end of the solder track has nothing connected to it.

Any help would be appreciated.
Thank You,
Bruce
bcwayne
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Re: 67-73 Cougar Sequential Turn Signal Trouble Shooting Thread

#414

Post by bcwayne »

Well after another go at it I decided to pull the turn signal switch out and jump the connections at the switch, Got brake lights when brake pedal is stepped on.
Intermittent new switch. Guess Ill order another one. wonder how many Ill have to go thru.
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cougarsunlimited.net
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Re: 67-73 Cougar Sequential Turn Signal Trouble Shooting Thread

#415

Post by cougarsunlimited.net »

bcwayne wrote: 02 Nov 2021, 08:32 1969 Convertible in excellent shape but the previous owners had issues with brake and emergency lights working in rear.
I've read through this thread, got some things to check such as Turn signal switch-okay, Brake Pedal switch-has power, Circuit Breaker-good, green wire in trunk in the sequencer box flashes on off with er lights and stays steady with brake lights. The rear side marker lights flash with E lights. Turn signals and running lights work in rear but Stop and E lights don't. The green wire that solders onto the sequencer board doesn't lead to anything. The other end of the solder track has nothing connected to it.
This problem sounds like a typical turn signal switch failure. Diagnosis instructions can be found on my website: www.cougarsunlimited.net

The first step is to observe if you have ANY brake lights in the rear.
The way the sequential controller works, the inner lights on each side are controlled directly from the turn signal switch.
Therefore, if the inner-most rear lights are not working, the problem is in the turn signal switch or connector pins.

I have published a turn signal switch failure diagnosis guide on my website. It shows the typical failure modes.
Typically turn signal switches are not repairable.

Note that the green (brake) wire on the sequencer board is not needed to detect brake lights.
The power for the brake lights is fed to the sequencer board on the orange/blue and green/orange wires.
These wires along with the front turn signal lights are used to determine if the lights should be sequenced (turn signal/emergency lights) or on solid (brakes).

One other issue: The rear side marker lights should NOT flash with the Emergency lights on a 1969 Cougar.
This is a 1970-71 Ford feature. For a 1969 Cougar, they should only turn on with the running lights or headlights.
There may have been a electrical modification to cause these lights to flash - perhaps a 1970 tail light harness has been installed?
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cougarsunlimited.net
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Re: 67-73 Cougar Sequential Turn Signal Trouble Shooting Thread

#416

Post by cougarsunlimited.net »

bcwayne wrote: 02 Nov 2021, 09:23 Well after another go at it I decided to pull the turn signal switch out and jump the connections at the switch, Got brake lights when brake pedal is stepped on.
Intermittent new switch. Guess Ill order another one. wonder how many Ill have to go thru.
Try operating the switch 10 times in each direction
Also, operate the emergency switch 10 times in/out prior to use.

This idea came from an old Ford TSB which specified this technique to clear the grease used during manufacturing.
1971cougar
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Re: 67-73 Cougar Sequential Turn Signal Trouble Shooting Thread

#417

Post by 1971cougar »

Hello Cougar community.. need help bad i recently purchased everything for the led upgrade...new turn signal switch,2-flasher units, side marker led kit, and the solid state led taillight sequential unit... Having issues now everything works except my taillights are not sequential ..the bulbs are on but nothing flashing...my side marker lights work and flash with blinker... the front turn signals work and flash. they all flash with the hazard lights on except the taillights...the taillights are all on i used sylvania 1157r led bulbs for all 6 but i get nothing no sequential no flashing just on
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CatsRock
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Re: 67-73 Cougar Sequential Turn Signal Trouble Shooting Thread

#418

Post by CatsRock »

1971cougar wrote: 15 Nov 2021, 15:14 Hello Cougar community.. need help bad i recently purchased everything for the led upgrade...new turn signal switch,2-flasher units, side marker led kit, and the solid state led taillight sequential unit... Having issues now everything works except my taillights are not sequential ..the bulbs are on but nothing flashing...my side marker lights work and flash with blinker... the front turn signals work and flash. they all flash with the hazard lights on except the taillights...the taillights are all on i used sylvania 1157r led bulbs for all 6 but i get nothing no sequential no flashing just on
I just responded to your other thread in the other section :smoke: :smoke:
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1973 XR7 351Q Vert
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EX 1972 Cougar XR7 Vert
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